Single Screw And Barrel Assembly
The performance of any extruder is only as good as its heart: the Single Screw and Barrel Assembly. At Zhoushan Zhongchang, we have decades of experience in the metallurgy and geometry of screw design, providing high-precision components that drive the extrusion industry. We utilize 38CrMoAlA alloy, forged as a single piece and nitrided to achieve a surface hardness exceeding HV900.
Product Introduction
Product Description
The performance of any extruder is only as good as its heart: the Single Screw and Barrel Assembly. At Zhoushan Zhongchang, we have decades of experience in the metallurgy and geometry of screw design, providing high-precision components that drive the extrusion industry. We utilize 38CrMoAlA alloy, forged as a single piece and nitrided to achieve a surface hardness exceeding HV900. This ensures that our Single Screw and Barrel Assembly maintains a tight clearance error of less than 0.02mm, which is critical for maintaining stable melt pressure and high throughput in plastic processing.
Whether you are upgrading an existing line or building a new system, our Single Screw and Barrel Assembly provides the "Reliability + Innovation" your facility needs. We offer various screw geometries, from shallow-groove designs for PE to low-shear flights for sensitive PVC. Our components are currently integrated into the production lines of world-renowned petrochemical groups, serving as a testament to our technical capability. When you source our Single Screw and Barrel Assembly, you are buying directly from a Zhejiang Provincial Technology-Based SME that understands the nuances of material degradation and wear resistance, ensuring you get the maximum lifespan out of your equipment.
Specifications
|
Material |
Premium 38CrMoAlA (Sacm645) or Bimetallic Alloy |
|
Surface Hardness |
HV900 - HV1050 after nitriding |
|
Clearance Precision |
Screw-to-Barrel clearance error < 0.02mm |
|
Customization |
L/D ratio (15：1 to 45：1) tailored to material |
|
Processing |
Precision grinding and polishing of internal barrel walls |
Application Areas
Crucial for all single-screw extruders used in cable insulation, pipe extrusion, film blowing, and plastic sheet production.
Customization Capability
We specialize in "one-to-one" matching. Give us your resin type and production goal, and we will design the screw pitch and compression ratio to match. We support manufacturing based on technical drawings or prototypes.
Factory Strength & Service
Our factory in Zhoushan houses specialized deep-hole drilling and screw milling machines. We maintain a sufficient inventory of original spare parts to ensure that replacement needs for your Single Screw and Barrel Assembly are met within 24 hours.
FAQ
Q: What is the lifespan of your nitrided screws?
A: With proper maintenance and non-abrasive materials, our screws can operate for several years in high-capacity environments.
Q: Do you provide free samples?
A: For standard small-diameter components, we can discuss sample terms based on project potential.
Q: Is your facility compliant with environmental laws?
A: Yes, we strictly follow local environmental regulations and maintain standardized operations.
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